Answer :

Final answer:

Thymine is the base unique to DNA among adenine, guanine, and cytosine.


Explanation:

Thymine is the base found only in DNA, along with adenine, guanine, and cytosine. It is a pyrimidine nucleobase that pairs with adenine in DNA. Thymine is unique to DNA and is not found in RNA, where uracil replaces it.


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